Infrared study of aniline adsorbed on aluminum halides and on gallium chloride.

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概要

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• Infrared study was made on aniline adsorbed on aluminum chloride, bromide and iodide. Aniline-<I>d</I><SUB>0</SUB> (C<SUB>6</SUB>H<SUB>5</SUB>NH<SUB>2</SUB>), aniline-<I>N</I>,<I>N</I>-<I>d</I><SUB>2</SUB>, aniline-<I>d</I><SUB>5</SUB> (C<SUB>6</SUB>D<SUB>5</SUB>NH<SUB>2</SUB>) and aniline-<I>d</I><SUB>7</SUB> were used. Aniline-<I>d</I><SUB>0</SUB>–gallium chloride system was studied for comparison. Only the bands associated with amino group showed large frequency shifts on complex formation. The structures of adsorbed molecules were discussed in terms of the frequency shift of bands, especially of those assigned to C–N stretching and ND<SUB>2</SUB> bending modes. The interaction of adsorbed aniline with aluminum chloride is rather weak and predominantly ionic. A strong chemisorption with the formation of an essentially covalent N···Al bond can be deduced for aniline adsorbed on aluminum bromide, iodide and gallium chloride. Such an ionic adsorption on aluminum chloride can be understood by considering the ionic structure of solid aluminum chloride. Some of the observed bands for aniline-<I>d</I><SUB>5</SUB> are (cm<SUP>−1</SUP>); 3424, 3350, 3312 (NH str.), 1620 (NH<SUB>2</SUB> bend.) and 1300 (CN str.).

• 公益社団法人 日本化学会の論文

著者

• Sato Hiroyasu

  College of Liberal Arts, Kagoshima University

• Arase Shin-ichi

  College of Liberal Arts, Kagoshima University

関連論文

• Ionization of Aromatic Molecules via σ-Complex with Aluminum Chloride in Solid Phase
• Infrared study of aniline adsorbed on aluminum halides and on gallium chloride.

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